Nios II debgger error

Hi all.

I tried to enter debugger and check about r/w to memory.

First of all i can not Resume to breakpoint (Resume button not availiable).

Second ,i can not see memory data. I have error "Unable to get memory block".

What wrong ?Everything looks O.K. in terminal window:

nios2-terminal: connected to hardware target using JTAG UART on cable

nios2-terminal: "ByteBlasterII [LPT1]", device 1, instance 0

nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

Thanks at advance.

Alex